Spencer George Martens, MD

Primary specialty

Vascular & Interventional Radiology PhysicianTaxonomy code 2085R0204X

License

85100-20 Issued in WI

Practice address

2900 W Oklahoma Ave
Milwaukee, WI 53215-4330

Phone

(414) 649-6000

NPI assigned

Jun 12, 2019

Sex

Male

Sole proprietor

Yes

Registry information is reported by the provider to CMS and is not verified. About this source

Specialties & licenses 4

Addresses

Other identifiers 2

Electronic endpoints 3

Medicare fee-for-service enrollment

Enrolled in IL, CA, WI3 enrollments

Eligible to order & refer

• Part B services: Yes
• Medical equipment: Yes
• Home health: Yes
• Power mobility devices: Yes
• Hospice: Yes

Green means eligible to order or refer.

Enrollment records 3

Specialty

Interventional Radiology

Education

Other, 2019

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Lakeshore Medical Clinic LLCGroup PAC ID 7719890730, 375 clinicians

Aurora Medical Group, Inc.Group PAC ID 6709794258, 3,764 clinicians

Aurora Advanced Healthcare, Inc.Group PAC ID 3375625833, 1,107 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Aurora St Lukes Medical Center Hospital, Milwaukee, WI, CCN 520138
• Aurora Medical Center Kenosha Hospital, Kenosha, WI, CCN 520189
• Aurora Medical Center - Summit Hospital, Summit, WI, CCN 520206
• Aurora Memorial Hospital Burlington Hospital, Burlington, WI, CCN 520059
• West Allis Memorial Hospital Hospital, West Allis, WI, CCN 520139

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: smartens432169@direct.myadvocateaurora.org
• Direct secure messaging: smartens686711@hisp.ehr.sutterhealth.org

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships and National Provider Directory roles.

• Aurora Advanced Healthcare, Inc.

  • Family Medicine Physician
  • Milwaukee, WI
  • NPI 1265629133
  Medicare reassignment Care Compare group NPD
• Aurora Medical Group, Inc.

  • Certified Registered Nurse Anesthetist
  • Milwaukee, WI
  • NPI 1427271378

  Diagnostic Radiology

  Medicare reassignment Care Compare group NPD
• Lakeshore Medical Clinic, LLC

  • Family Medicine Physician
  • Saint Francis, WI
  • NPI 1003861188
  Medicare reassignment Care Compare group NPD
• Aurora Advanced Healthcare Inc

  • Durable Medical Equipment & Medical Supplies
  • Summit, WI
  • NPI 1477186633
  NPD
• Aurora Medical Group, Inc.

  • Durable Medical Equipment & Medical Supplies
  • Oshkosh, WI
  • NPI 1326858044
  NPD
• University of Chicago Medical Center

  • General Acute Care Hospital
  • Chicago, IL
  • NPI 1861792517
  NPD (past)

Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.

• Aurora Health Care Metro, Inc.

  • Mental Health Clinic/Center (Including Community Mental Health Center)
  • Cudahy, WI
  • NPI 1235355983

  Hospital

  Care Compare affiliation
• Aurora Health Care Metro, Inc.

  • General Acute Care Hospital
  • Milwaukee, WI
  • NPI 1861447179
  Care Compare affiliation
• Aurora Health Care Southern Lakes, Inc.

  • General Acute Care Hospital
  • Kenosha, WI
  • NPI 1225156888
  Care Compare affiliation
• Aurora Health Care Southern Lakes, Inc.

  • General Acute Care Hospital
  • Summit, WI
  • NPI 1699008029
  Care Compare affiliation
• Aurora Health Care Southern Lakes, Inc.

  • General Acute Care Hospital
  • Burlington, WI
  • NPI 1861557753
  Care Compare affiliation
• West Allis Memorial Hospital, Inc.

  • Clinic/Center
  • West Allis, WI
  • NPI 1235345695

  Hospital

  Care Compare affiliation
• West Allis Memorial Hospital, Inc.

  • General Acute Care Hospital
  • West Allis, WI
  • NPI 1407801640
  Care Compare affiliation

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1560297600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1757462400000",
    "number": "1487213484",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 735044",
            "city": "CHICAGO",
            "state": "IL",
            "postal_code": "606735044",
            "telephone_number": "800-326-2250"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "2900 W OKLAHOMA AVE",
            "city": "MILWAUKEE",
            "state": "WI",
            "postal_code": "532154330",
            "telephone_number": "414-649-6000"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "4725 N Federal Hwy",
            "address_purpose": "LOCATION",
            "city": "Fort Lauderdale",
            "state": "FL",
            "postal_code": "333084668",
            "country_code": "US",
            "telephone_number": "630-702-9023",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "5841 S Maryland Ave # Mc2026",
            "address_purpose": "LOCATION",
            "city": "Chicago",
            "state": "IL",
            "postal_code": "606371443",
            "country_code": "US",
            "telephone_number": "773-702-3550",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "MARTENS",
        "first_name": "SPENCER",
        "middle_name": "GEORGE",
        "credential": "MD",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2019-06-12",
        "last_updated": "2025-09-10",
        "certification_date": "2025-09-10",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "2085R0204X",
            "taxonomy_group": "",
            "desc": "Radiology, Vascular & Interventional Radiology",
            "state": "WI",
            "license": "85100-20",
            "primary": true
        },
        {
            "code": "2085R0202X",
            "taxonomy_group": "",
            "desc": "Radiology, Diagnostic Radiology",
            "state": "IL",
            "license": "036163712",
            "primary": false
        },
        {
            "code": "390200000X",
            "taxonomy_group": "",
            "desc": "Student in an Organized Health Care Education/Training Program",
            "state": "FL",
            "license": "28488",
            "primary": false
        },
        {
            "code": "390200000X",
            "taxonomy_group": "",
            "desc": "Student in an Organized Health Care Education/Training Program",
            "state": "IL",
            "license": "125.075325",
            "primary": false
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "100331362",
            "state": "WI"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "TRN#",
            "identifier": "28488",
            "state": "FL"
        }
    ],
    "endpoints": [
        {
            "endpointType": "FHIR",
            "endpointTypeDescription": "FHIR URL",
            "endpoint": "https://EpicFHIR.aurora.org/FHIR/MYAURORA/api/FHIR/DSTU2/",
            "affiliation": "N",
            "use": "DIRECT",
            "useDescription": "Direct",
            "address_1": "2900 W Oklahoma Ave",
            "city": "Milwaukee",
            "state": "WI",
            "country_code": "US",
            "postal_code": "532154330",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "smartens432169@direct.myadvocateaurora.org",
            "affiliation": "N",
            "use": "DIRECT",
            "useDescription": "Direct",
            "address_1": "2900 W Oklahoma Ave",
            "city": "Milwaukee",
            "state": "WI",
            "country_code": "US",
            "postal_code": "532154330",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "smartens249935@direct.luhs.org",
            "affiliation": "N",
            "use": "DIRECT",
            "useDescription": "Direct",
            "address_1": "5841 S Maryland Ave # Mc2026",
            "city": "Chicago",
            "state": "IL",
            "country_code": "US",
            "postal_code": "606371443",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

• Matthew Marshall, PHARM.D.
• Marta V Thakkar, MD,SC
• Cheryl L Martens, MS CCC SLP
• Douglas H Martens, MSW, CAPSW
• Heather Martens
• Suzanne J Martens, M.D.
• Brandon Curtis Lee Marth, DO
• Martha'S Loving Hands Personal Care Agency LLC
• Martin E. Samuel, DDS,MD,SC
• Martin Transportation

• Vascular & Interventional Radiology Physician in Milwaukee, WI
• Providers in Milwaukee, WI by specialty
• Vascular & Interventional Radiology Physician in Wisconsin

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Sep 10, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
• Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.